It's now using setenv() under Haiku instead of its own stuff - and that will

now mimic setenv() instead of some strangely different thing :)
Rearranged and corrected the code that opens the PTY, and TTY.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@13478 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/apps/terminal/MYOB/spawn.cpp

@@ -67,27 +67,33 @@ Check \"Shell\" in preferance panel.' "\
  * Set environment varriable.
  */
 
-void
+#ifndef __HAIKU__
-Setenv (const char *var, const char *value)
+int
+setenv(const char *var, const char *value, bool overwrite)
 {
 	int envindex = 0;
 	const int len = strlen(var);
 	const int val_len = strlen (value);
 
 	while (environ[envindex] != NULL) {
-		if (strncmp (environ [envindex], var, len) == 0) {
+		if (!strncmp(environ[envindex], var, len)) {
 			/* found it */
-			environ[envindex] = (char *)malloc ((unsigned)len + val_len + 1);
+			if (overwrite) {
-			sprintf (environ [envindex], "%s%s", var, value);
+				environ[envindex] = (char *)malloc((unsigned)len + val_len + 2);
-			return;
+				sprintf(environ[envindex], "%s=%s", var, value);
+			}
+			return 0;
 		}
 		envindex++;
 	}
 
-	environ [envindex] = (char *) malloc ((unsigned)len + val_len + 1);
+	environ[envindex] = (char *)malloc((unsigned)len + val_len + 2);
-	sprintf (environ [envindex], "%s%s", var, value);
+	sprintf(environ[envindex], "%s=%s", var, value);
 	environ[++envindex] = NULL;
+	return 0;
 }
+#endif
+
 
 /*
  * reapchild. Child process is out there, let's catch its terminaltion.
@@ -122,13 +128,14 @@ typedef struct
 pid_t sh_pid;
 char tty_name[B_PATH_NAME_LENGTH];
 
+
 int
 spawn_shell(int row, int col, const char *command, const char *coding)
 {
 	int done = 0;
 	pid_t pgrp;
   
-	int master = 0;
+	int master = -1;
 	int slave;
 	struct termios tio;
 	struct winsize ws;
@@ -154,32 +161,35 @@ spawn_shell (int row, int col, const char *command, const char *coding)
 	* which is already in use, so we simply go until the open succeeds.
 	*/
 
-	DIR *dir;
+	DIR *dir = opendir("/dev/pt/");
-	dir = opendir("/dev/pt/");
+	if (dir != NULL) {
-	
+		struct dirent *dirEntry;
-	struct dirent *dir_entry;
+		while ((dirEntry = readdir(dir)) != NULL) { 
-	char pty_name[B_PATH_NAME_LENGTH];
+			// skip '.' and '..'
-	while(NULL != (dir_entry = readdir(dir)))
+			if (dirEntry->d_name[0] == '.')
-	{ 
-		if (dir_entry->d_name[0] == '.') // skip . and ..
 				continue;
-		sprintf(pty_name, "/dev/pt/%s", dir_entry->d_name);
+
-		printf("%s\n", pty_name);
+			char ptyName[B_PATH_NAME_LENGTH];
-		master = open(pty_name, O_RDWR);
+			sprintf(ptyName, "/dev/pt/%s", dirEntry->d_name);
-		if (master >= 0)
+
+			master = open(ptyName, O_RDWR);
+			if (master >= 0) {
+				// Set the tty that corresponds to the pty we found
+				sprintf(tty_name, "/dev/tt/%s", dirEntry->d_name);
 				break;
+			} else {
+				fprintf(stderr, "could not open %s: %s\n", ptyName, strerror(errno));
+			}
+		}
+		closedir(dir);
 	}
 
 	// If master is still < 0 then we haven't found a tty we can use
-	if (master < 0)
+	if (master < 0) {
-	{
     	printf("didn't find any available pesudo ttys.");
     	return -1;
 	}
 
-	// Set the tty that corresponds to the pty we found
-	sprintf (tty_name, "/dev/tt/%s", dir_entry->d_name);
-
    /*
 	* Get the modes of the current terminal. We will duplicates these
 	* on the pseudo terminal.
@@ -191,7 +201,6 @@ spawn_shell (int row, int col, const char *command, const char *coding)
 		return -1;
 	}
 
-  
 	/* Fork a child process. */
 	if ((sh_pid = fork()) < 0) {
 		close(master);
@@ -199,15 +208,14 @@ spawn_shell (int row, int col, const char *command, const char *coding)
 	}
 
 	if (sh_pid == 0) {
-	    /* 
+	    // Now in child process.
-    	 * Now in child process.
-     	 */
 
 		/*
 		 * Make our controlling tty the pseudo tty. This hapens because
 		 * we cleared our original controlling terminal above.
 		 */
 
+		// ToDo: why two of them in the first place?
 		close(cp_pipe[0]);
 		close(pc_pipe[1]);
 
@@ -247,7 +255,6 @@ spawn_shell (int row, int col, const char *command, const char *coding)
 		 */
 
 		tio.c_line = 0;
-
 		tio.c_lflag |= ECHOE; 
 
 		/* input: nl->nl, cr->nl */
@@ -260,7 +267,6 @@ spawn_shell (int row, int col, const char *command, const char *coding)
 		tio.c_oflag |= ONLCR;
 		tio.c_oflag |= OPOST;
 
-
 		/* baud rate is 19200 (equal beterm) */
 		tio.c_cflag &= ~(CBAUD);
 		tio.c_cflag |= B19200;
@@ -276,10 +282,7 @@ spawn_shell (int row, int col, const char *command, const char *coding)
 		 * enable signals, canonical processing (erase, kill, etc), echo.
 		*/
 		tio.c_lflag |= ISIG|ICANON|ECHO|ECHOE|ECHONL;
-		tio.c_lflag &= ~ECHOK;
+		tio.c_lflag &= ~(ECHOK | IEXTEN);
-
-		tio.c_lflag &= ~IEXTEN;
-
 
 		/* set control charactors. */
 		tio.c_cc[VINTR]  = 'C' & 0x1f;	/* '^C'	*/
@@ -358,16 +361,15 @@ spawn_shell (int row, int col, const char *command, const char *coding)
 		/*
 		 * setenv TERM and TTY.
 		 */
-		Setenv ("TERM=", "xterm");
+		setenv("TERM", "xterm", true);
-		Setenv ("TTY=",tty_name);
+		setenv("TTY", tty_name, true);
-		Setenv ("TTYPE=", coding);
+		setenv("TTYPE", coding, true);
 
 		/*
 		 * If don't set command args, exec SHELL_COMMAND.
 		 */
-		if (command == NULL) {
+		if (command == NULL)
 			command = SHELL_COMMAND;
-		}
 
 		memcpy (com_line, command, 256);
 		ptr = com_line;
@@ -389,7 +391,7 @@ spawn_shell (int row, int col, const char *command, const char *coding)
 
 		args[i] = NULL;
 
-		Setenv ("SHELL=", *args);
+		setenv("SHELL", *args, true);
 
 		/*
 		 * Print Welcome Message.